LT3845AEFE#TRPBF

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LT3845AEFE#TRPBF

IC REG CTRLR BUCK 16TSSOP

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Specifications

Part Status Active
Output Type Transistor Driver
Function Step-Down
Output Configuration Positive
Topology Buck
Number of Outputs 1
Output Phases 1
Voltage - Supply (Vcc/Vdd) 4V ~ 60V
Frequency - Switching 300kHz
Synchronous Rectifier Yes
Clock Sync Yes
Control Features Enable, Frequency Control, Soft Start
Operating Temperature -40°C ~ 125°C (TJ)
Mounting Type Surface Mount
Package / Case 16-TSSOP (0.173", 4.40mm Width) Exposed Pad
Supplier Device Package 16-TSSOP-EP
Base Product Number LT3845

Overview

Description

The LT3845AEFE#TRPBF is a high-performance voltage regulator from Analog Devices, specifically designed for use in power supply applications. This device is a step-down (buck) switching regulator that effectively converts a higher input voltage to a lower output voltage with high efficiency. It features a wide input voltage range, typically from 4.5V to 60V, making it suitable for a variety of power sources.
Key features include adjustable output voltage, high efficiency (up to 95%), and built-in protections such as overcurrent and thermal shutdown. The LT3845AEFE#TRPBF also supports various operational modes, allowing for flexibility in design. With a maximum output current of 3A, it is ideal for powering demanding loads in automotive, industrial, and telecommunications applications.
The "FE" package indicates a specific form factor, while "TRPBF" denotes that it is a RoHS-compliant, Pb-free package for environmental safety. Overall, the LT3845AEFE#TRPBF is a reliable choice for engineers seeking efficient power management solutions.

Features

The LT3845AEFE#TRPBF is a high-performance synchronous step-down regulator designed for efficient power management in various applications. Key features include:
1. Wide Input Voltage Range: Operates from 4V to 60V, accommodating a variety of power sources.
2. Output Current: Delivers up to 15A of continuous output current, suitable for high-power applications.
3. High Efficiency: Achieves high efficiencies, often exceeding 95%, reducing thermal management requirements.
4. Integrated MOSFETs: Includes low RDS(ON) synchronous MOSFETs, which minimize conduction losses.
5. Adjustable Output Voltage: Output voltage can be set from 0.8V to 60V, providing flexibility for different applications.
6. Current Mode Control: Features current mode control for fast transient response and improved stability.
7. Protection Features: Includes overvoltage, overcurrent, and thermal protection to ensure safe operation.
8. Soft-Start: Integrated soft-start function to limit inrush current during startup.
Overall, the LT3845AEFE#TRPBF is ideal for applications requiring robust power supply solutions, such as industrial, automotive, and battery-powered devices.

Package

The LT3845AEFE#TRPBF is packaged in a 16-lead TSSOP (Thin Shrink Small Outline Package).

Pinout

The LT3845AEFE#TRPBF is a high-performance, dual-channel, synchronous step-down controller. It features a pin count of 28.
Key functions of the pins include:
1. Power and Ground Pins: Provide power to the IC and ground reference.
2. Feedback Pins (FB): Used for voltage feedback to regulate output voltage.
3. Switching Control Pins: Control the operation of the internal MOSFETs for voltage regulation.
4. Compensation Pins: Allow external compensation to optimize stability and transient response.
5. Synchronous Rectification Pins: Enable the synchronous operation for improved efficiency.
6. Oscillator and Timing Pins: Set the switching frequency and control timing functions.
7. Protection Pins: Monitor overvoltage and undervoltage conditions to protect the circuit.
8. Enable Pins: Control the start-up and shutdown of the IC.
Refer to the datasheet for detailed pinout and specifications.

Manufacturer

The LT3845AEFE#TRPBF is manufactured by Analog Devices, Inc. Analog Devices is a global semiconductor company that specializes in high-performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits. The company is known for its innovative solutions in various applications, including industrial automation, automotive, communications, healthcare, and consumer electronics. Founded in 1965 and headquartered in Norwood, Massachusetts, Analog Devices focuses on providing high-quality products that enable precise data conversion and signal processing, helping to improve the efficiency and performance of electronic systems.

Application

The LT3845AEFE#TRPBF is a high-performance PWM controller primarily used in power supply applications. Its application areas include industrial power supplies, automotive power management, telecom equipment, and DC-DC converters. It supports various topologies such as boost, buck, and flyback converters, making it suitable for a range of voltage regulation and conversion tasks. The device is designed for high efficiency and can manage multiple output configurations, enhancing its versatility in complex power systems.

Equivalent

The LT3845AEFE#TRPBF chip, a high-performance DC-DC controller, has several equivalent products, including the Texas Instruments LM5118, Maxim Integrated MAX15005, and the Analog Devices ADP1866. These alternatives provide similar functionalities in power management applications, including adjustable output voltage and current control. Always verify specifications and compatibility for your specific application.

Shipping

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DHL: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 2-5 business days.

FedEx: Shipping cost ranges from $25-$40 (0.5kg), with an estimated delivery time of 3-7 business days.

UPS: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 3-7 business days.

TNT: Shipping cost ranges from $25-$65 (0.5kg), with an estimated delivery time of 3-7 business days.

EMS: Shipping cost ranges from $30-$50 (0.5kg), with an estimated delivery time of 7-15 business days.

Registered Air Mail: Shipping cost is $2-$4 (0.1kg), with an estimated delivery time of 5-20 business days.

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